Budget Builder
Split take-home pay across needs, wants and savings. A free budget calculator with seven market settings and transparent 50/30/20 reference guidance.
Splits your monthly take-home income across needs, wants and savings using the 50/30/20 frame, so you can see which of the three your real spending overshoots.
How to use it
- Enter your monthly take-home pay — the amount that actually reaches your bank account, not your CTC.
- Fill in what you currently spend in each category. Estimates are fine; the pattern matters more than the precision.
- Add any category the built-in list is missing — the split is recalculated around it.
- Compare your actual split against 50/30/20 and look at the largest single gap first.
How it is calculated
Take-home income is divided 50% needs, 30% wants, 20% savings to produce the target for each group.
Your entered spending is summed per group and compared against that target, so the output is a gap per group rather than a single score.
Categories are fixed to one of the three groups, which is what keeps the comparison stable when you add your own.
A worked example
A ₹80,000 take-home month
- Needs target (50%)
- ₹40,000
- Wants target (30%)
- ₹24,000
- Savings target (20%)
- ₹16,000
- Actual needs entered
- ₹48,000 — rent alone is ₹28,000
- Actual wants entered
- ₹20,000
- Actual savings
- ₹12,000
Needs overshoot by ₹8,000 and savings undershoot by ₹4,000. The gap is housing, not groceries — so the lever is rent, flatmates or income, and the useful response is to hold the savings share and let needs and wants trade against each other.
Common mistakes
- Entering CTC instead of take-home. It inflates all three targets at once and makes the split look achievable when it is not.
- Putting the whole EMI in needs. Only the contractual minimum is a need; anything above it is savings, because it increases net worth.
- Leaving out annual bills. Insurance, festivals and school fees do not appear in a typical month and are what break the budget four times a year.
- Treating a needs share above 50% in a metro as a discipline failure. It is usually structural, and attacking food spending will not fix a rent problem.
What it assumes
- It works from figures you enter. Nothing is imported from a bank, so the split is only as good as your inputs.
- 50/30/20 is a heuristic, not a rule. In high-rent metros a needs share above 50% is structural rather than a failure of discipline.
- It budgets a typical month. Annual lumps — insurance premiums, festival spending, travel — need spreading across twelve months yourself.
Frequently asked questions
What is the 50/30/20 budget rule?
It splits your take-home income three ways: 50% to needs (rent, groceries, utilities, transport, insurance), 30% to wants (eating out, shopping, subscriptions) and 20% to savings and investments. It is a starting frame for a conversation about priorities, not a law — the useful part is seeing which of the three your actual spending overshoots.
Should I use my gross or take-home salary?
Take-home — the amount that actually reaches your bank account after tax and deductions. Budgeting from gross salary overstates every category by whatever you never see, which is precisely the mistake the split is meant to expose.
What if my rent alone is more than 50% of my income?
That is common in Mumbai, Bengaluru and Delhi NCR, and it does not mean you are doing it wrong. Treat 50/30/20 as a diagnostic: if needs are structurally over 50%, the lever is usually housing or income, not the discretionary spending most budgets attack first.